6A-64 ENGINE REPAIR
DISMANTLING AND ASSEMBLY OF THE SERVO
STEERING HYDRAULIC PUMP
CAUTION:
Before starting dismantling clean thoroughly
components to be dismantled and around them.
Dismantling
1) Dismantle water radiator and air radiator (intercooler) (see
6B-8).
2) Disconnect inlet linkage (3) of hydraulic oil to pump and
pour the content of the tank in an adequate container.
3) Disconnect outlet linkage (2) of pressurized oil at pump.
4) Dismantle nuts (1) fixing hydraulic pump (4) to body of the
auxiliary organs group.
5) Take away hydraulic pump (4).
CAUTION:
Plug with appropriated caps air, water and
hydraulic circuits holes while they keep appearing
during dismantling because the entry of alien bodies
in the conductions could seriously damage the
component in question.
Assembly
NOTE:
Clean carefully touching contact areas of pumps, linkages
and lodgings in auxiliary organs group.
1) Proceed to assemble reversing the dismantling order paying
attention to the following tasks:
• Assemble the new impermeabilizing gaskets, washers and
pieces showing any damage.
• Continue assembly applying specified tightening torque's.
Tightening torque:
• Screw linkage at hydraulic pump oil outlet:
3 ÷ 4 Kg-m (30 ÷ 40 Nm)
• Screw linkage at hydraulic pump oil inlet:
3 ÷ 4 Kg-m (30 ÷ 40 Nm)
• Nuts fixing hydraulic pump:
3,5 Kg-m (35 Nm)
1
2
3
4
2) Proceed to fill and purge the hydraulic circuit of the servo
steering (see 0B-27).
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